Process of making plates for storage batteries.



No. 698,039.. A Patented Apr. 22,1902.

4 A. MEYGRET. PROCESS 0F MAKlNG PLATES FRSTRGE BATTERIES.

rApplication med Dec. s, 1900.) Y (No Model.)

TME Naam PETERS ce.. PHOTO-LUMC.. WASHINGTON. n. e,

UNITED STATES ACHILLE MEYGRET,

ATENT 'f-PEEICE.

OF PARIS, FRANCE.

SPECIFICATION forming part of Letters Patent N o. 698,039, dated April 22, 1902.

Application filed December 3, 1900.

T0 @ZZ whom, it may concern: l

Be it known4 that I, ACHILLE MEYGEET, a citizen of the Republic of France, and a resi- 'dent of Paris, France, have invented certain new and useful Improvements in Storage Bat.`

teries, of which the following is aspecication.

y My present invention relates to storage batteries, the obj ect being to provide an improved i process of manufacturing the main parts of y these batteries, so that a light but stron g storage battery is obtained.

The improved process consists in preparing the active mass by means of a crushingmill until 1t is suiiiciently firm, introducing 1 able mold, into which antimonious lead is run, y

binding them into one solid body along with the conducting portion of each stick, Figures l and 2. The electrodes are then steeped in a ybath of elastic collodion or Celluloid varnish, which resists the electrolyte. This material constitutes an elastic coating, which retains the active matter notwithstanding the expansion and contraction thereof.l In this Inanner intense and rapid charges and discharges are effected without any danger of the electrodes becoming loosened or the active matter being detached.

In the accompanying drawings, Fig. l is an elevation of a storage battery, partly brokenaway. Fig. 2 is a side elevation of the same, and Figs. 3 to 9 show various sections of the sticks as they may be made.

In order to constitute the electrodes, these sticks A may be arranged in a plane or on concentric arcs of circles or in any other Way and then united together by pouring antimony lead between said sticks. However, I preferably construct the electrodes as follows: The winged sticks leave the draw-plate provided with a hole. Said sticks are therefore tubes of -varying sizes. Said sticks are arranged in a metallic mold having an upper Serial No. 38,553. (N0 specimens.)

gutter, the holes being closed by means of a plate serving to complete the mold. When antimony lead is poured into the gutter of the mold, said lead B fills up the holes in the sticks. When the sticks are now taken out from the mold, they constitute a plate C, composed of a series of continuous sticks held together by their cores of lead, which serve also to give the same the necessary rigidity.

When it is not desired to have a very light electrode, a metal frame may be cast all around the sticks. The surface of the sticks may still be increased by giving same a screw or similar shape, and it will be seen that I obtain a maximum capacity with a minimum volume and weight.

In order to prevent the several sticks from being actuated laterally, I have provided the following means: When the sticks are perfectly dried, before or after being united by means of lead they are immersed in varnish which cannot be deteriorated by the electrolyte. Said varnish may either be conducting or insulating. It merely serves to prevent portions of the active mass from being detached. The same result may be obtained by coating the sticks by means of the electrolysis with a thin layer of metal which cannot be decomposed by the electrolyte. In order to give such protecting-coatings the p0- rosity necessary for the electrolytic reactions, the sticks before or after being united are moved between two cylinders provided with a series of projecting points, whereby said coating will be provided with minute holes, fulfilling the function of pores. Said porosity may also be obtained by chemical means by mixing with the varnish a pulverulent metal, such as zinc or a soluble salt or powder of carbonate of lime, and afterward absorbing the metal or the salt, whereby small holes are produced in the protecting-coating. f

Having fully described my invention, what I claim, and desire to secure by Letters Pat ent, is-

1. The process ofproduci'ng electrodes for storage batteries consisting in forcing a disintegrated active mass throughasuitable dieplate to form the mass into hollow sticks or tubes, placing these hollow sticks or tubes in a suitable mold, running metal into the mold which conducts the metal into the bores of IOO the hollow sticks or tubes, that portion of the metal remaining in the mold constituting a frame integral with the metal cores received in the bores of the hollow sticks or tubes.

2. The process of producing electrodes for storage batteries consisting in forcing an active disintegrated mass through a die-plate from which it emerges in the form of hollow sticks or tubes of suitable contour, placing the hollow sticks or tubes in any desirable position with relation to one another, running fluid metal into the bores of the hollow sticks or tubes to form cores therein, the fluid metal remaining outside of the bores of the hollow sticks and connected with the cores thereof formed into a frame integral with the cores in the bores of the hollow sticks or tubes.

3. The improved process of manufacturing electrodes for storage batteries which consists in forcing a disintegrated active mass through a suitable die-plate to produce sticks, coating the sticks with a chemical compound containing a pulverulent material and subsequently dissolving the pulverulent material whereby the necessary porosity is given the stick.

4. The improved process of producing electrodes for storage batteries consisting in forcing a disintegrated active mass through adieplate from which it emerges in the form of hollow sticks or tubes, placing the hollow sticks or tubes in a mold running Iiuid metal into the mold, the metal being permitted to enter the bores of the hollow sticks or tubes to form cores therefor, the metal remaining in the mold connected to the cores of the hollow sticks or tubes being formed into a frame integral with the cores, coating the plates thus formed with varnish and subsequently giving the varnish the necessary porosity whereby the fluid may gain access to the active material.

5. A method or process of producing electrodes for storage batteries, consisting, iirst, in forcing a disintegrated active mass through means from which it emerges in the form of hollow sticks or tubes of suitable contour, second, in placing such sticks or tubes in a suitable mold in any desired design, third, in running any suitable metal into the bores of the hollow sticks or tubes to form cores therefor, the metal remaining iu the mold having the form of a frame which is integral with the cores of the hollow sticks or tubes, fourth, iu coating the plates with any suitable non-couducting covering and fifth, in giving such coating only, the necessary porosity.

In testimony whereof I have hereunto set my hand in presence of two Witnesses.

ACHILLE MEYGRET.

Witnesses:

A'DoLPH STURM, Y EDWARD P. MACLEAN. 

